Many jellyfish can produce their light.
Jellyfish Scientific Classification
Jellyfish Physical Characteristics
Yellow, Red, Blue, White, Green, Orange, Purple, Pink
900 million, as of 1990
Three to Six months
Top speed
5 mph
20-400g (0.7-14oz)
Jellyfish Distribition

Jellyfish are primitive aquatic animals and have actually been recognized to exist in seas for the previous countless years.

Though they are not generally hostile, these fish are well-known for their capability to sting, permitting them to safeguard themselves versus any kind of type of risk.

These fish utilize their arms for searching. Nonetheless, they do not have any kind of bones, heart, or the majority of various other body organs. Remarkably, their bodies are mainly composed of water.

They have a life-span of concerning 3 to 6 months and can mature to 7 feet in dimension.

Do Jellyfish Have Minds?

As stunning as these sea animals are, they do not really have a mind. Rather, the body is composed of an intricate nerve system, which is where every one of their electric motor features and sensory task happens. Via the nerve cells in this system, the body informs the muscular tissues when to agreement, which is exactly how they swim.

Unbelievable Jellyfish Truths!

  • No minds, heart, or eyes: These fish are mainly composed of water. They have no minds, heart, or eyes. They additionally have no bones, and their body is mostly regulated by the nerve system.
  • Old, primitive beings: Jellyfish are recognized to have actually been around for countless years – also prior to dinosaurs!
  • Bioluminescent: These fish are bioluminescent – which suggests that they can generate their light.
  • Quick food digestion: The digestion procedure does not take long when jellyfish eat. This fast procedure guarantees that they can continue to be afloat in water.
  • Worldwide specials: Jellyfish are not liked by the predators that feed upon them however additionally by the human population around the world.

Jellyfish Classification and Scientific Name

These animals pass the scientific name Scyphozoa and come from the kingdom Animalia and phylum Cnidaria. Scyphozoa originates from 2 Greek words– skuphos and zōion. While skuphos suggests “alcohol consumption mug,” words zōion suggests “animal.” The name is an analysis to imply that this animal has water. The phylum cnidaria is fascinating also given that it originates from the contemporary Latin word knidē, which suggests “nettle.”

As a component of their classification, these fish originated from the below- phylum Medusozoa and class Scyphozoa – which coincides as the jellyfish’s scientific name in the classification. Medusozoa originates from the Old Greek Μέδουσα, which originates from words for “subjugate” (μέδω).

Jellyfish Species

Jellyfish develop a huge family of planktonic animals, and current research studies reveal that there go to the very least 4,000 that have actually currently been uncovered. Thinking about the immensity of the seas, researchers think that this number is hardly a portion of what is really in the sea.

Despite Having every one of these species around the globe, just 70 are thought about to be a risk to humans. A few of those unsafe species consist of the Malo kingi and the Chironex Fleckeri, which are both in package jellyfish family. The poison is powerful and uncomfortable sufficient to eliminate.

There are some kinds that are also maintained as pets, mostly for their failure to hurting their proprietor. One of the most typical jellyfish to maintain as a pet is the moon jellyfish, which lives for around 15 months. Various other species of jellyfish can live a lot, a lot longer.

Never-ceasing Jellyfish

Turritopsis dohrnii that is additionally called the Immortal jellyfish is a tiny and clear jellyfish and can surprisingly turn around to earlier phases of their lives. This change can take the animal back to the state that the jellyfish remained in as a fed egg when it decides on the seafloor at seniority.

Jellyfish Appearance

A few of these animals are clear while others exist in brilliant shades like yellow, blue, and pink. These fish are bioluminescent which suggests that they generate their light.

Their bodies might look facility as a result of the method they look however they are fairly basic. Jellyfish have a smooth body with arms which contain small cells that can be utilized when they utilize their painful abilities.

They have no bones, minds, heart, or eyes. Their mouths are discovered in the facility of their bodies. They are generally around 0.5 to 16 inches and can mature to 7 feet and generally consider around 440 extra pounds.

Yellow Jellyfish in ocean
Yellow Jellyfish in seaDan90266/ Creative Commons

Jellyfish Arms

These animals have arms that are furnished with small painful cells that are turned on when these fish when they introduce a sting assault on their victim. These arms are utilized to incapacitate and stun the victim that the jellyfish hurts. These arms are discovered hanging from the jellyfish’s body.

Though these arms are regulated by the nerve system, the sting is hardly ever deadly. Many box jellyfish have solid sufficient poison to perform the sufferer. The objective of the arms is to quit the activity of its victim, though they are additionally utilized as a method to safeguard the animal.

Jellyfish Distribution, Population, and Environment

They are discovered around the world and can be discovered in every sea in the world. Numerous species select to reside in cozy exotic waters or cool Arctic waters. They can exist at the end of the seas along with on the water surface areas, making them exceptionally functional.

Though the particular locations might differ, every species should reside in deep sea to grow. Since 1990, there were 900 million lots of jellyfish in the Black Sea alone.

Despite this capability to make it through in numerous areas, air pollution is a huge danger to every species. Oil spills and unloading chemicals in the water can quickly take in right into their skin, that makes it difficult for them to recreate. Though the air pollution does not constantly eliminate them quickly, the majority of species will certainly not live almost as long when they are revealed.

Jellyfish Predators and Target

These animals deal with dangers from numerous sea and land animals consisting of sea anemones, swordfish, sea turtles, tuna, and penguins. When the jellyfish obtain depleted on coastlines, they are generally discovered and consumed by foxes and various other birds and animals. If humans take care of to capture them, it isn’t unusual to prepare it as a special.

These fish subsequently feed upon various points like planktonic eggs, little plants, little fish and larvae, fish eggs, and various other little aquatic animals.

The Sting of the Jellyfish

These animals have arms that are equipped with small sting cells that the fish usage on their victim or when they pick up risk. They typically utilize their painful features to safeguard themselves and utilize their arms to infuse poison right into various other animals.

The stings can trigger discomfort and inflammation and can in some cases additionally cause entire- body ailment. Some stings can also be life- harmful. One of the most serious sting originates from Australian box jellyfish, which is one of the most dangerous jellyfish worldwide. Their poison can be so uncomfortable it typically results in sinking from targets that enter into shock.

Jellyfish Reproduction and Life-span

These animals are recognized to recreate both sexually and asexually. While among the species recreates sexually, a few other kinds recreate asexually. Nonetheless, for both the procedures, the fed eggs pick the seafloor after becoming a multi- mobile planula.

While the majority of jellyfish live just around 3 to 6 months, some online longer and can make it through for 2 to 3 years. Besides, the immortal jellyfish never ever practically passes away. Rather, it at some point decides on the seafloor and adds to the birth of a more youthful jellyfish from its very own DNA. Basically, it produces a duplicate of itself without ever before practically “passing away.”

Jellyfish in Angling and Food Preparation

Jellyfish can be captured and consumed. Greater than twelve species are edible and are relished around the world as specials. These fish are an abundant resource of healthy protein and fats.

One preferred dish is sesame jellyfish, which sets the fish with soy sauce, vinegar, sesame oil, and in some cases chili oil.


  1. David Burnie, Dorling Kindersley (2011) Animal, The Definitive Visual Guide To The World’s Wildlife
  2. Tom Jackson, Lorenz Books (2007) The World Encyclopedia Of Animals
  3. David Burnie, Kingfisher (2011) The Kingfisher Animal Encyclopedia
  4. Richard Mackay, University of California Press (2009) The Atlas Of Endangered Species
  5. David Burnie, Dorling Kindersley (2008) Illustrated Encyclopedia Of Animals
  6. Dorling Kindersley (2006) Dorling Kindersley Encyclopedia Of Animals
  7. How Stuff Works, Available here:
  8. Virginia Institute of Marine Science, Available here:
  9. National Geographic Kids, Available here:
  10. Wikipedia, Available here:
  11. Fact Retriever, Available here:
  12. Ocean Scubadive, Available here:
  13. Oceana, Available here:
  14. BioExpedition, Available here:
  15. Jelly Watch, Available here:
  16. Seattle Aquarium, Available here:

Relate animals

Abyssinian Guinea Pig

They are one of the oldest breeds of guinea pig

Ackie Monitor

The ackie monitor has a spiny tail which it uses as in self-defense.


The Albertonectes had the longest neck out of other Elasmosaurids.

American Bully

Though the American bully was bred to look intimidating, it makes an extremely friendly family pet!

Latest Animal News